/* Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.flowable.ldap;

import javax.naming.directory.InitialDirContext;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Internal class used to simplify ldap calls by wrapping the actual ldap logic in a {@link LDAPCallBack}.
 * 
 * @author Joram Barrez
 */
public class LDAPTemplate {

    private static final Logger LOGGER = LoggerFactory.getLogger(LDAPTemplate.class);

    protected LDAPConfiguration ldapConfigurator;

    public LDAPTemplate(LDAPConfiguration ldapConfigurator) {
        this.ldapConfigurator = ldapConfigurator;
    }

    public <T> T execute(LDAPCallBack<T> ldapCallBack) {
        InitialDirContext initialDirContext = null;
        try {
            initialDirContext = LDAPConnectionUtil.creatDirectoryContext(ldapConfigurator);
        } catch (Exception e) {
            LOGGER.info("Could not create LDAP connection: {}", e.getMessage(), e);
        }
        T result = ldapCallBack.executeInContext(initialDirContext);
        LDAPConnectionUtil.closeDirectoryContext(initialDirContext);
        return result;
    }

    public LDAPConfiguration getLdapConfigurator() {
        return ldapConfigurator;
    }

    public void setLdapConfigurator(LDAPConfiguration ldapConfigurator) {
        this.ldapConfigurator = ldapConfigurator;
    }

}
